:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#101827;background:#fff;font-synthesis:none}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0}
    a{color:inherit;text-decoration:none}
    button{font:inherit;cursor:pointer}
    img{max-width:100%}
    .skip-link{position:absolute;left:12px;top:-60px;z-index:20;background:#fff;padding:10px 14px}
    .skip-link:focus{top:10px}
    .site-header{height:62px;position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:0 32px;border-bottom:1px solid #f0f1f3;background:rgba(255,255,255,.97)}
    .brand{display:flex;align-items:center;width:184px;flex:none}
    .brand img{width:184px;height:auto;display:block}
    .main-nav{height:100%;display:flex;gap:34px;align-items:center}
    .main-nav a{height:100%;display:flex;align-items:center;font-size:15px;white-space:nowrap;border-bottom:2px solid transparent}
    .main-nav a:hover,.main-nav a[aria-current=page]{color:#234fc2;border-bottom-color:#234fc2}
    .header-right{display:flex;align-items:center;gap:24px;width:184px;justify-content:flex-end}
    .github-icon{display:flex;align-items:center;gap:5px;font-size:15px}
    .github-icon svg{height:23px;width:23px}
    .language{display:flex;align-items:center;gap:12px;font-size:13px;color:#777}
    .language span:last-child{color:#2258bc;font-weight:700}
    .menu-button{display:none;border:0;background:none;font-size:22px}
    .hero{position:relative;background:radial-gradient(ellipse at 50% 68%,#eceaff 0, #f3f6ff 40%,#fff 74%);overflow:hidden}
    .hero-content{width:min(100%,1320px);margin:0 auto;padding:88px 4% 0;text-align:center}
    h1{font-size:clamp(36px,4.3vw,62px);line-height:1.3;letter-spacing:-.025em;margin:0 0 24px;font-weight:600;color:#172339}
    h1 .title-accent{color:#5665d9}h1 .agent-word{font-family:Inter,"Segoe UI",sans-serif;font-weight:500}
    .hero-subtitle{font-size:20px;color:#46546d;margin:0 0 12px;line-height:1.7}
    .hero-description{font-size:15px;line-height:1.85;color:#7b8498;margin:0 auto 34px;max-width:640px}
    .platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:760px;margin:auto;position:relative;z-index:2}
    .platform-card{height:150px;background:#fff;border:1px solid #eceff9;border-radius:22px;position:relative;overflow:hidden;box-shadow:0 8px 26px #585bd809;transition:border-color .2s,box-shadow .2s}
    .platform-card:hover,.platform-card:focus-within,.platform-card.expanded{border-color:#bdc8ff;box-shadow:0 12px 32px #585bd81a}
    .platform-summary{position:absolute;inset:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;border:0;border-radius:22px;background:#fff;color:#697488;font-size:16px}
    .download-platform{width:46px;height:46px}
    .platform-details{position:absolute;inset:0;padding:12px 20px;background:#fff;display:flex;flex-direction:column;justify-content:center;gap:8px;visibility:hidden;opacity:0;transition:opacity .18s,visibility .18s;pointer-events:none}
    .platform-card:hover .platform-details,.platform-card:has(.platform-details :focus) .platform-details,.platform-card.expanded .platform-details{visibility:visible;opacity:1;pointer-events:auto}
    .system-requirement{margin:0;color:#8a92a2;font-size:12px;line-height:1.6}
    .direct-download{display:flex;align-items:center;justify-content:center;gap:12px;min-height:36px;padding:7px 10px;border:1px solid #7c99ff;border-radius:24px;color:#3868ee;background:#fff;font-size:15px;transition:background .2s}
    .direct-download:hover,.direct-download:focus-visible{background:#e8edff;outline-offset:3px}
    #downloads{scroll-margin-top:100px}
    .download-options{display:grid;gap:6px;min-width:0}
    .download-options-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .download-options .direct-download{min-height:32px;padding:4px 6px;font-size:13px;white-space:nowrap}
    .linux-choice{padding:0;margin:0;border:0;display:flex;align-items:center;gap:12px;font-size:14px;color:#27344b}
    .linux-choice>span{color:#6d7890;margin-right:2px}.linux-choice label{display:flex;align-items:center;gap:4px;cursor:pointer}.linux-choice input{margin:0;accent-color:#4375ff;width:15px;height:15px}.linux-choice label:has(input:checked){color:#4375ff}
    .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
    .hero-links{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:25px;font-size:14px;color:#6271c3}.hero-links span{color:#c5cade}.hero-links a:hover{text-decoration:underline}
    .package-status{font-size:12px;color:#939bb0;min-height:18px;margin:12px 0 0}
    .system-preview{max-width:1040px;margin:46px auto 0;padding:0;background:transparent;border:0;border-radius:0;box-shadow:none;overflow:visible}
    .system-preview img{width:100%;display:block;border-radius:0;filter:drop-shadow(0 18px 30px rgba(74,79,135,.13))}
    .button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:49px;border:1px solid #e8e9ec;border-radius:8px;background:#fff;padding:10px 17px;font-size:15px;font-weight:650;box-shadow:0 6px 16px rgba(20,36,63,.06);transition:transform .2s,box-shadow .2s}
    .button:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(20,36,63,.12)}
    .button svg{width:18px;height:18px;flex:none}
    .section{max-width:1320px;margin:0 auto;padding:86px 4%}
    .section-heading{margin:0 0 14px;font-size:clamp(32px,3vw,42px);letter-spacing:-.04em;color:#080b10}
    .section-description{margin:0 0 50px;color:#606773;font-size:17px;line-height:1.7}
    .feature-wrap{position:relative}
    .feature-card{display:grid;grid-template-columns:1fr 1fr;min-height:450px;border:1px solid #f0f0f0;border-radius:22px;overflow:hidden;background:white;box-shadow:0 16px 34px rgba(18,31,55,.06)}
    .feature-art{display:flex;align-items:center;justify-content:center;background:#fff;min-width:0}
    .feature-art img{width:100%;height:100%;max-height:450px;object-fit:contain}
    .feature-copy{display:flex;flex-direction:column;justify-content:center;padding:52px min(5vw,70px)}
    .feature-tag{font-size:14px;font-weight:700;color:#185ac5;margin-bottom:20px}
    .feature-copy h3{font-size:clamp(27px,2.8vw,39px);line-height:1.25;margin:0 0 22px;color:#07090c}
    .feature-copy p{font-size:17px;line-height:1.8;color:#5f636a;margin:0 0 28px}
    .feature-actions{display:flex;gap:12px;flex-wrap:wrap}
    .button.dark{background:#000;color:#fff;border-color:#000;box-shadow:none}
    .feature-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border:none;border-radius:50%;background:white;box-shadow:0 5px 18px #0001;font-size:28px;z-index:1}
    .feature-arrow.prev{left:-23px}.feature-arrow.next{right:-23px}
    .feature-dots{display:flex;justify-content:center;gap:12px;margin-top:34px}
    .feature-dots button{width:10px;height:10px;padding:0;border:0;border-radius:50%;background:#d9d9d9}
    .feature-dots button[aria-current=true]{background:#2970e9}
    .cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-auto-rows:1fr;gap:28px}
    .case-card{display:flex;flex-direction:column;height:100%;overflow:hidden;border:1px solid #f0f1f4;border-radius:18px;background:#fff;box-shadow:0 14px 28px #12213908;transition:transform .2s,box-shadow .2s}
    .case-card:hover{transform:translateY(-4px);box-shadow:0 20px 35px #12213918}
    .case-art{height:200px;flex:none;background:#f8f9fb;display:flex;align-items:center;justify-content:center;overflow:hidden}
    .case-art img{width:100%;height:100%;object-fit:contain}
    .word-case .case-art img,.ppt-case .case-art img,.illustrated-case .case-art img{width:88%;height:88%}
    .case-card:not(.word-case):not(.ppt-case):not(.illustrated-case) .case-art img{object-fit:cover}
    .case-copy{flex:1;padding:24px 22px 30px}
    .case-tag{color:#1d5cba;font-size:14px;font-weight:700;margin-bottom:10px}
    .case-copy h3{font-size:22px;line-height:1.35;margin:0 0 14px;color:#121720}
    .case-copy p{font-size:16px;line-height:1.6;color:#626a76;min-height:52px;margin:0}
    .more-cases{text-align:center;margin-top:38px}
    .more-cases a{display:inline-flex;padding:12px 20px;border:1px solid #e7eaf0;border-radius:8px;font-weight:650}
    .partners{padding:78px 4%;text-align:center;background:#fafbfc;border-top:1px solid #f0f0f0}
    .partners h2{font-size:27px;margin:0 0 13px}
    .partners p{color:#646b75;font-size:16px;margin:0 0 32px}
    .partner-list{display:flex;justify-content:center;align-items:center;gap:clamp(20px,5vw,74px);flex-wrap:wrap}
    .partner-list a{display:flex;align-items:center;gap:10px;font-weight:700}
    .partner-list img{width:46px;height:46px;object-fit:contain}
    footer{text-align:center;padding:24px;color:#8b929b;font-size:13px;border-top:1px solid #eee}
    @media(max-width:820px){.site-header{padding:0 20px}.brand,.brand img{width:150px}.header-right{width:auto}.menu-button{display:block}.main-nav{display:none;position:absolute;left:0;right:0;top:62px;height:auto;background:#fff;box-shadow:0 12px 18px #0001;flex-direction:column;align-items:stretch;gap:0;padding:10px 20px}.main-nav.open{display:flex}.main-nav a{height:42px}.hero{min-height:650px;align-items:flex-start}.hero-image{opacity:.38;object-position:62% center}.hero-content{padding:75px 5%}.feature-card{grid-template-columns:1fr}.feature-art img{max-height:320px}.feature-copy{padding:28px 32px 40px}.cases-grid{gap:16px}.case-art{height:210px}}
    @media(max-width:600px){.github-icon span,.language{display:none}.hero{min-height:670px}.hero-image{opacity:.23;object-position:68% center}.hero-actions{grid-template-columns:1fr;max-width:340px}.hero-description{max-width:500px}.section{padding:65px 20px}.section-description{margin-bottom:30px}.cases-grid{grid-template-columns:1fr}.case-art{height:210px}.feature-arrow.prev{left:-12px}.feature-arrow.next{right:-12px}.feature-arrow{width:38px;height:38px}.partner-list{gap:22px}.partner-list a{min-width:125px}}
    @media(max-width:820px){.hero{min-height:0;display:block}.hero-content{padding:64px 24px 0}h1{font-size:42px}.platform-grid{gap:10px}.platform-summary{padding:20px 8px;font-size:13px}.arch-switch{flex-direction:column}.system-preview{margin-top:36px}}
    @media(max-width:600px){.hero-content{padding:48px 18px 0}h1{font-size:34px;line-height:1.4}.hero-subtitle{font-size:16px}.hero-description{font-size:13px}.platform-grid{grid-template-columns:repeat(2,1fr);gap:12px}.platform-summary{padding:20px 12px}.platform-card:hover,.platform-card:focus-within,.platform-card.expanded{border-radius:20px}.arch-switch{flex-direction:row}.system-preview{padding:0;border-radius:0}.system-preview img{border-radius:0}.package-status{line-height:1.6}}
    @media(max-width:820px){.platform-grid{gap:12px}.platform-details{padding:12px}.linux-choice{gap:7px;font-size:12px}.direct-download{font-size:13px}}
    @media(max-width:600px){.platform-grid{grid-template-columns:1fr;max-width:320px}.platform-card{height:150px}.platform-details{padding:12px 20px}.linux-choice{font-size:14px;gap:12px}.direct-download{font-size:15px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}